High-stability miniature gear pump gear set

Abstract

The utility model discloses a high-stability miniature gear pump gear set, which relates to the field of gear pumps and comprises a pump body and a driving shaft, a gear box is arranged inside the pump body, a movable shaft is connected inside the gear box through a bearing, a driven gear is sleeved on the outer wall of the movable shaft, and a driving gear is sleeved on the outer wall of the driving shaft. Through the arrangement of the locking assembly, when a driving gear or a driven gear is seriously abraded and needs to be replaced, a worker can screw out the bottom end of a locking bolt from a driving shaft or a movable shaft firstly, then a threaded column is rotated through a rotary knob, a movable seat moves upwards, then a push plate is pulled to rotate, the push plate pulls a clamping block to move, and the clamping block is clamped in the clamping block. The clamping blocks are moved out of the clamping grooves, the clamping blocks do not limit the driving gear or the driven gear any more, at the moment, the driving gear or the driven gear can be taken out, and therefore the driving gear or the driven gear can be detached and replaced conveniently.

Description

Technical Field

[0001] The utility model relates to the field of gear pumps, in particular to a gear set of a high-stability micro gear pump. Background Technique

[0002] A gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gears to transport liquids or increase their pressure; it consists of two gears, a pump body, and front and rear covers to form two closed spaces. When the gears rotate, the volume of the space on the side where the gears disengage changes from small to large, creating a vacuum to suck in the liquid, and the volume of the space on the side where the gears mesh changes from large to small to squeeze the liquid into the pipeline; the suction chamber and the discharge chamber are separated by the meshing line of the two gears.

[0003] According to the Chinese patent with the publication number CN220227167U, a gear pump assembly is disclosed. In this gear pump assembly, through the settings of a sound insulation box body, a sound insulation box cover, and sound-absorbing cotton, when in use, the gear pump is wrapped with sound-absorbing cotton, and the sound insulation box body and the sound insulation box cover provide support and protection for the sound-absorbing cotton to prevent wear, thereby achieving the effect of reducing the noise of the gear pump.

[0004] Regarding the above-mentioned disclosed patent content, by setting two meshing gears, after the gears rotate continuously, friction occurs, and the meshing parts of the gears may be worn over a long time. To avoid affecting the rotation efficiency of the gears, the worn gears need to be disassembled and replaced. However, since the gears are fixed on the output shaft and the movable shaft of the drive motor, it is inconvenient to disassemble, and thus it is difficult to replace the worn gears, which affects the subsequent use effect of the gear pump. Content of the Utility Model

[0005] Based on this, the purpose of the present utility model is to provide a gear set of a high-stability micro gear pump to solve the technical problem of inconvenient disassembly and replacement of worn gears.

[0006] To achieve the above object, the present utility model provides the following technical solution: A gear set of a high-stability micro gear pump includes a pump body and a drive shaft. A gear box is provided inside the pump body, and a movable shaft is connected inside the gear box through a bearing. A driven gear is sleeved on the outer wall of the movable shaft, and a driving gear is sleeved on the outer wall of the drive shaft. Locking components are provided inside both the movable shaft and the drive shaft, and each locking component includes a cavity opened inside the movable shaft and the drive shaft, through holes opened on both sides of the movable shaft and the drive shaft, and clamping grooves opened on the inner walls of the driving gear and the driven gear. A threaded column is connected inside the cavity through a bearing, and a movable seat is sleeved on the outer wall of the threaded column. A clamping block is clamped inside the clamping groove, and a push plate is connected between the clamping block and the movable seat through a rotating shaft.

[0007] By adopting the above technical solution, after the clamping block is removed from the inside of the clamping groove, the clamping block no longer limits the driving gear or the driven gear, and at this time, the driving gear or the driven gear can be taken out.

[0008] Furthermore, locking bolts extending into the driving shaft and the movable shaft are threadedly connected inside both of the two threaded columns.

[0009] By adopting the above technical solution, after the bottom end of the locking bolt is screwed into the driving shaft or the movable shaft, the threaded column can be locked to prevent the threaded column from rotating randomly.

[0010] Furthermore, the movable seat is threadedly connected to the threaded column, and the outer wall of the movable seat fits against the inner wall of the cavity.

[0011] By adopting the above technical solution, when the threaded column rotates, it will drive the movable seat to move, and the movement of the movable seat will drive the push plate to rotate.

[0012] Furthermore, a driving motor is installed below the inside of the pump body, and the output end of the driving motor is connected to a driving shaft.

[0013] By adopting the above technical solution, when the gear pump needs to be used, the driving motor can be started, and the operation of the driving motor can drive the driving shaft to rotate, thereby driving the driving gear to rotate.

[0014] Furthermore, the top of the pump body is installed with a cover plate by screws.

[0015] By adopting the above technical solution, the setting of the cover plate facilitates the closure of the top of the pump body and improves the sealing performance of the pump body.

[0016] Furthermore, the driving gear is detachably connected to the driving shaft, and the driven gear is detachably connected to the movable shaft.

[0017] By adopting the above technical solution, it is convenient to take out the driving gear from the driving shaft, and at the same time, the driven gear can be taken out from the movable shaft.

[0018] Furthermore, the driving gear meshes with the driven gear.

[0019] By adopting the above technical solution, when the driving gear rotates, it will drive the driven gear to rotate in the opposite direction, thereby driving the movable shaft to rotate.

[0020] Furthermore, the clamping block is adapted to the clamping groove, and the clamping block is slidably connected to the through port.

[0021] By adopting the above technical solution, after the clamping block is clamped into the inside of the clamping groove, the driving gear or the driven gear can be limited to prevent the driving gear or the driven gear from moving randomly.

[0022] Further, a knob is installed at the top end of the threaded post, and the push plate is rotatably connected to the movable seat.

[0023] By adopting the above technical solution, it is convenient for the staff to drive the threaded post to rotate through the knob. After the threaded post rotates, it will drive the movable seat to move.

[0024] In summary, the present utility model mainly has the following beneficial effects:

[0025] In the present utility model, by providing a locking assembly, when the driving gear or the driven gear is severely worn and needs to be replaced, the staff can first screw out the bottom end of the locking bolt from the driving shaft or the movable shaft, then rotate the threaded post through the knob to move the movable seat upward, and then pull the push plate to rotate. The push plate pulls the block to move, so that the block moves out of the clamping groove, and the block no longer limits the driving gear or the driven gear. At this time, the driving gear or the driven gear can be taken out. Then, a new driving gear or driven gear is sleeved on the driving shaft or the movable shaft, and the block is aligned with the clamping groove. Then, the threaded post is rotated in the reverse direction to move the movable seat downward, and then push the push plate to rotate. The push plate pushes the block to move, so that the block moves into the clamping groove to limit and fix the driving gear or the driven gear. In this way, the installation of the driving gear or the driven gear can be completed. Then, the bottom end of the locking bolt is screwed into the driving shaft or the movable shaft. And this disassembly and assembly method is simple and convenient, without using multiple bolts for fixing, and the operation steps are few, thereby improving the disassembly, assembly and replacement efficiency of the driving gear or the driven gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall three-dimensional structure schematic diagram of the present utility model;

[0027] Figure 2 is the overall front sectional structure schematic diagram of the present utility model;

[0028] Figure 3 is the three-dimensional structure schematic diagram of the driving gear of the present utility model;

[0029] Figure 4 is the three-dimensional structure schematic diagram of the driving shaft of the present utility model;

[0030] Figure 5 is the three-dimensional structure schematic diagram of the movable seat of the present utility model;

[0031] Figure 6 is the three-dimensional structure schematic diagram of the threaded post of the present utility model;

[0032] Figure 7 is of the present utility model Figure 2 amplified structure schematic diagram at A in.

[0033] In the figure: 1. Pump body; 2. Cover plate; 3. Gearbox; 4. Movable shaft; 5. Driven gear; 6. Driving motor; 7. Driving shaft; 8. Driving gear; 9. Locking assembly; 901. Cavity; 902. Threaded column; 903. Knob; 904. Locking bolt; 905. Movable seat; 906. Through port; 907. Pusher plate; 908. Block; 909. Card slot. Detailed implementation mode

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0035] Next, according to the overall structure of the present invention, its embodiments will be described.

[0036] Embodiment 1:

[0037] A high-stability micro gear pump gear set, as Figures 1-7 shown, includes a pump body 1 and a driving shaft 7. A gearbox 3 is provided inside the pump body 1, and a movable shaft 4 is connected inside the gearbox 3 through a bearing. A driven gear 5 is sleeved on the outer wall of the movable shaft 4, a driving gear 8 is sleeved on the outer wall of the driving shaft 7, a locking assembly 9 is provided inside both the movable shaft 4 and the driving shaft 7. A driving motor 6 is installed below the inside of the pump body 1, and the output end of the driving motor 6 is connected to the driving shaft 7. A driving motor 6 is installed below the inside of the pump body 1, and the output end of the driving motor 6 is connected to the driving shaft 7.

[0038] Refer to Figures 1-3 , the top of the pump body 1 is installed with a cover plate 2 through screws. The setting of the cover plate 2 facilitates closing the top of the pump body 1 and improves the sealing performance of the pump body 1. The driving gear 8 is detachably connected to the driving shaft 7, and the driven gear 5 is detachably connected to the movable shaft 4, which is convenient to take out the driving gear 8 from the driving shaft 7 and at the same time can take out the driven gear 5 from the movable shaft 4. The driving gear 8 meshes with the driven gear 5. When the driving gear 8 rotates, it will drive the driven gear 5 to rotate in the opposite direction, thereby driving the movable shaft 4 to rotate.

[0039] Specifically, the locking assembly 9 includes cavities 901 formed inside the movable shaft 4 and the driving shaft 7, through openings 906 formed on both sides of the movable shaft 4 and the driving shaft 7, and clamping grooves 909 formed on the inner walls of the driving gear 8 and the driven gear 5. A threaded column 902 is connected inside the cavity 901 through a bearing, and a movable seat 905 is sleeved on the outer wall of the threaded column 902. The movable seat 905 is threadedly connected to the threaded column 902, and the outer wall of the movable seat 905 fits against the inner wall of the cavity 901. A knob 903 is installed at the top of the threaded column 902. The push plate 907 is rotatably connected to the movable seat 905, which facilitates the staff to drive the threaded column 902 to rotate through the knob 903. When the threaded column 902 rotates, it will drive the movable seat 905 to move, and the movement of the movable seat 905 will drive the push plate 907 to rotate.

[0040] Specifically, a clamping block 908 is clamped inside the clamping groove 909. When the clamping block 908 is removed from the inside of the clamping groove 909, the clamping block 908 no longer limits the driving gear 8 or the driven gear 5. At this time, the driving gear 8 or the driven gear 5 can be taken out. And a push plate 907 is connected between the clamping block 908 and the movable seat 905 through a rotating shaft. The clamping block 908 is adapted to the clamping groove 909, and the clamping block 908 is slidably connected to the through opening 906. When the clamping block 908 is clamped into the inside of the clamping groove 909, it can limit the driving gear 8 or the driven gear 5 to prevent the driving gear 8 or the driven gear 5 from moving randomly.

[0041] Embodiment 2:

[0042] On the basis of the above Embodiment 1, in order to prevent the threaded column 902 from rotating randomly, it needs to be locked. Therefore, the following structure is set up.

[0043] Refer to Figure 3 、 Figure 5 、 Figure 6 and Figure 7 , locking bolts 904 extending into the inside of the driving shaft 7 and the movable shaft 4 are threadedly connected inside both threaded columns 902. When the bottom end of the locking bolt 904 is screwed into the inside of the driving shaft 7 or the movable shaft 4, the threaded column 902 can be locked to prevent the threaded column 902 from rotating randomly.

[0044] The working principle of the present utility model is as follows: First, when the gear pump works, the driving motor 6 can be started. The work of the driving motor 6 can drive the driving shaft 7 to rotate. After the driving shaft 7 rotates, it will drive the driving gear 8 to rotate, and then drive the driven gear 5 to rotate;

[0045] When the driving gear 8 or the driven gear 5 is severely worn and needs to be replaced, the staff can first take out the cover plate 2, then screw out the bottom end of the locking bolt 904 from the driving shaft 7 or the movable shaft 4, then rotate the threaded column 902 through the knob 903 to move the movable seat 905 upward, and then pull the push plate 907 to rotate. The push plate 907 pulls the block 908 to move, so that the block 908 moves out of the clamping groove 909, and the block 908 no longer limits the driving gear 8 or the driven gear 5. At this time, the driving gear 8 or the driven gear 5 can be taken out. Then, a new driving gear 8 or driven gear 5 is sleeved on the driving shaft 7 or the movable shaft 4. After aligning the block 908 with the clamping groove 909, the threaded column 902 is rotated in the reverse direction to move the movable seat 905 downward, thereby pushing the push plate 907 to rotate. The push plate 907 pushes the block 908 to move, so that the block 908 moves into the clamping groove 909 to limit and fix the driving gear 8 or the driven gear 5. In this way, the installation of the driving gear 8 or the driven gear 5 can be completed, and then the bottom end of the locking bolt 904 is screwed into the driving shaft 7 or the movable shaft 4.

[0046] Although the embodiments of the present invention have been shown and described, the specific embodiments are only explanations of the present invention, and they are not limitations on the present invention. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments according to needs, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A high-stability micro gear pump gear set, comprising a pump body (1) and a drive shaft (7), characterized in that: The pump body (1) is provided with a gear box (3) inside, and the gear box (3) is connected to a movable shaft (4) inside via a bearing, the outer wall of the movable shaft (4) is sleeved with a driven gear (5), the outer wall of the drive shaft (7) is sleeved with a driving gear (8), and the movable shaft (4) and the drive shaft (7) are both provided with a locking assembly (9), and the locking assembly (9) includes a cavity (901) opened inside the movable shaft (4) and the drive shaft (7), and a cavity (902) opened inside the movable shaft (4) and the drive shaft (7). 4) and the openings (906) on both sides of the driving shaft (7) and the slots (909) opened on the inner walls of the driving gear (8) and the driven gear (5), the interior of the cavity (901) is connected to a threaded column (902) through a bearing, and the outer wall of the threaded column (902) is sleeved with a movable seat (905), the interior of the slot (909) is clamped with a clamping block (908), and a push plate (907) is connected between the clamping block (908) and the movable seat (905) through a rotating shaft.

2. A high stability micro gear pump gear set according to claim 1, characterized in that: The interiors of the two threaded columns (902) are both threadedly connected with locking bolts (904) extending into the interiors of the drive shaft (7) and the movable shaft (4).

3. A high stability micro gear pump gear set according to claim 1, characterized in that: The movable seat (905) is threadedly connected to the threaded column (902), and the outer wall of the movable seat (905) is in contact with the inner wall of the cavity (901).

4. A high stability micro gear pump gear set according to claim 1, characterized in that: A driving motor (6) is installed at the lower part of the pump body (1), and the output end of the driving motor (6) is connected to a driving shaft (7).

5. The high stability micro gear pump gear set according to claim 1, characterized in that: A cover plate (2) is mounted on the top of the pump body (1) by means of screws.

6. A high stability micro gear pump gear set according to claim 1, characterized in that: The driving gear (8) is detachably connected to the driving shaft (7), and the driven gear (5) is detachably connected to the movable shaft (4).

7. The high stability micro gear pump gear set according to claim 1, characterized in that: The driving gear (8) is meshed with the driven gear (5).

8. The high stability micro gear pump gear set according to claim 1, characterized in that: The clamping block (908) is adapted to the clamping slot (909), and the clamping block (908) is slidably connected to the through opening (906).

9. The high stability micro gear pump gear set according to claim 1, characterized in that: A knob (903) is installed at the top end of the threaded column (902), and the push plate (907) is rotatably connected to the movable seat (905).

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